mirror of
https://github.com/pound-emu/ballistic.git
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94 lines
4.3 KiB
XML
94 lines
4.3 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<?xml-stylesheet type="text/xsl" encoding="UTF-8" href="iform.xsl" version="1.0"?>
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<!DOCTYPE instructionsection PUBLIC "-//ARM//DTD instructionsection //EN" "iform-p.dtd">
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<!-- Copyright (c) 2010-2022 Arm Limited or its affiliates. All rights reserved. -->
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<!-- This document is Non-Confidential. This document may only be used and distributed in accordance with the terms of the agreement entered into by Arm and the party that Arm delivered this document to. -->
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<instructionsection id="HLT" title="HLT -- A64" type="instruction">
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<docvars>
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<docvar key="instr-class" value="system" />
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<docvar key="isa" value="A64" />
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<docvar key="mnemonic" value="HLT" />
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</docvars>
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<heading>HLT</heading>
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<desc>
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<brief>
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<para>Halt instruction</para>
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</brief>
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<authored>
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<para>Halt instruction. An <instruction>HLT</instruction> instruction can generate a Halt Instruction debug event, which causes entry into Debug state.</para>
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</authored>
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</desc>
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<alias_list howmany="0"></alias_list>
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<classes>
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<iclass name="System" oneof="1" id="iclass_system" no_encodings="1" isa="A64">
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<docvars>
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<docvar key="instr-class" value="system" />
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<docvar key="isa" value="A64" />
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<docvar key="mnemonic" value="HLT" />
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</docvars>
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<iclassintro count="1"></iclassintro>
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<regdiagram form="32" psname="aarch64/instrs/system/exceptions/debug/halt">
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<box hibit="31" width="8" settings="8">
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<c>1</c>
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<c>1</c>
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<c>0</c>
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<c>1</c>
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<c>0</c>
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<c>1</c>
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<c>0</c>
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<c>0</c>
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</box>
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<box hibit="23" width="3" name="opc" settings="3">
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<c>0</c>
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<c>1</c>
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<c>0</c>
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</box>
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<box hibit="20" width="16" name="imm16" usename="1">
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<c colspan="16"></c>
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</box>
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<box hibit="4" width="3" name="op2" settings="3">
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<c>0</c>
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<c>0</c>
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<c>0</c>
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</box>
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<box hibit="1" width="2" name="LL" settings="2">
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<c>0</c>
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<c>0</c>
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</box>
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</regdiagram>
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<encoding name="HLT_EX_exception" oneofinclass="1" oneof="1" label="">
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<docvars>
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<docvar key="instr-class" value="system" />
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<docvar key="isa" value="A64" />
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<docvar key="mnemonic" value="HLT" />
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</docvars>
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<asmtemplate><text>HLT #</text><a link="sa_imm" hover="16-bit unsigned immediate [0-65535] (field "imm16")"><imm></a></asmtemplate>
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</encoding>
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<ps_section howmany="1">
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<ps name="aarch64/instrs/system/exceptions/debug/halt" mylink="aarch64.instrs.system.exceptions.debug.halt" enclabels="" sections="1" secttype="noheading">
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<pstext mayhavelinks="1" section="Decode" rep_section="decode">if EDSCR.HDE == '0' || !<a link="impl-shared.HaltingAllowed.0" file="shared_pseudocode.xml" hover="function: boolean HaltingAllowed()">HaltingAllowed</a>() then UNDEFINED;
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if <a link="impl-shared.HaveBTIExt.0" file="shared_pseudocode.xml" hover="function: boolean HaveBTIExt()">HaveBTIExt</a>() then
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<a link="impl-aarch64.SetBTypeCompatible.1" file="shared_pseudocode.xml" hover="function: SetBTypeCompatible(boolean x)">SetBTypeCompatible</a>(TRUE);</pstext>
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</ps>
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</ps_section>
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</iclass>
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</classes>
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<explanations scope="all">
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<explanation enclist="HLT_EX_exception" symboldefcount="1">
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<symbol link="sa_imm"><imm></symbol>
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<account encodedin="imm16">
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<intro>
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<para>Is a 16-bit unsigned immediate, in the range 0 to 65535, encoded in the "imm16" field.</para>
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</intro>
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</account>
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</explanation>
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</explanations>
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<ps_section howmany="1">
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<ps name="aarch64/instrs/system/exceptions/debug/halt" mylink="execute" enclabels="" sections="1" secttype="Operation">
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<pstext mayhavelinks="1" section="Execute" rep_section="execute">boolean is_async = FALSE;
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<a link="impl-shared.Halt.2" file="shared_pseudocode.xml" hover="function: Halt(bits(6) reason, boolean is_async)">Halt</a>(<a link="DebugHalt_HaltInstruction" file="shared_pseudocode.xml" hover="constant bits(6) DebugHalt_HaltInstruction = '101111'">DebugHalt_HaltInstruction</a>, is_async);</pstext>
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</ps>
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</ps_section>
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</instructionsection>
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